Filter
Top Products
RT-PRC031-EN 9
Features and Benefits
2. interface with Trane Tracer™
building management system
3. interface with a generic (non-
Trane) building management
system. All setup parameters are
preset from the factory, requiring
less start-up time during
installation.
The unit mounted Human Interface
and the Remote Human Interface
Panels' functions are identical, with
the exception of the Service mode
which is not available on the Remote
Human Interface Panel. This common
interface feature requires less time
for building maintenance personnel
to learn to interact with the unit.
All air handler control parameters are
adjustable and can be setup through
the Remote Human Interface Panel
such as, but not limited to: system
on/off, demand limiting type, night
setback setpoints, and many other
setpoints. No potentiometers are
required for setpoint adjustment, all
adjustments are done through the
Remote Human Interface keypad.
Up to 56 different air handler
diagnostic points can be monitored
through the human interfaces such
as: sensor failures and loss of supply
airflow. No special tools are required
for servicing the unit. All diagnostic
displays are available in clear English
at the Remote Human Interface and
will be held in memory, so that the
operator/service person can
diagnose the root cause of failures.
Figure 10. Statitrac
Statitrac™ Direct Space
Building Pressurization
Control
Trane Statitrac™ control is a highly
accurate and efficient method of
maintaining building pressure
control with a large air handler.
Building space pressurization control
is achieved with a 100 percent
modulating exhaust system that
features a single forward curved fan,
with modulating discharge dampers
that operates only when needed or a
100% modulating plenum return fan
with airfoil wheel that operates
continuously with the supply fan.
Most of the operating hours of the
100 percent modulating exhaust
system are at part load, resulting in
energy savings.
Statitrac, with the 100 percent
modulating exhaust system,
provides comfort and economy for
buildings with large air handler
systems. Statitrac, with the 100%
modulating plenum return fan
provides comfort and space pressure
control in more demanding
applications with high return static
pressure, and applications requiring
duct returns.
Statitrac control with exhaust fan is
simple! The space pressure control
turns the exhaust fans on and off as
required and modulates exhaust
dampers, or VFD speed, to maintain
space pressure within the space
pressure deadband. Economizer and
return air dampers are modulated
based on ventilation control and
economizer cooling request.
The unit mounted Human Interface
Panel can be used to:
1. adjust space pressure setpoint
2. adjust space pressure deadband
3. measure and read building static
pressure
The modulating exhaust system
maintains the desired building
pressure, while saving energy and
keeping the building at the right
pressure. Proper building
pressurization eliminates annoying
door whistling, doors standing open,
and odors from other zones. The
Statitrac™ direct space building
control sequence will also be
maintained when a variable
frequency drive is used.
Statitrac Control with Plenum
Return Fan is State of the Art!
Other manufacturers utilize a fan
tracking control scheme whereby the
return fan speed tracks the supply fan
speed in a linear fashion. This
scheme works well at minimum and
maximum CFM airflow. However,
due to the dissimilar performance
characteristics of the supply and
return fan, building pressure is
difficult to control at points between
minimum and maximum CFM
airflow.
The Trane return fan/building
pressurization control system
eliminates the effects of dissimilar
supply/return fan characteristics
experienced in a linear tracking
control system by modulating the
exhaust dampers based on space
pressure, the return/economizer
dampers based on ventilation
requirements, and the return fan
speed based on return plenum static
pressure. The supply fan, return fan,
exhaust damper, and return/
economizer damper systems act
independently from one another to
maintain comfort and building
pressure.
The return fan operates whenever
the supply fan is in operation. The
unit exhaust dampers are modulated
in response to the space pressure
signal to maintain space pressure
within the space pressure deadband.
The unit economizer and return air
dampers are modulated based on
ventilation control, minimum outside
air economizer position, and
economizer cooling request. The
return fan speed is modulated based
on a return duct static pressure
deadband control. Using the unit
mounted Human Interface Panel you
can:
1. adjust space pressure setpoint
2. adjust space pressure deadband
3. measure and read building space
pressure
4. measure and read return duct
static pressure.
Proper building pressurization
eliminates annoying door whistling,
doors standing open, and odors from
other zones.